摘要
本文在分类和区系的基础上，对老君山自然保护区蕨类物种进行多样性研究。结果如下：（１）蕨类物种丰富，物种多样性指数较高；（２）物种密度及个体密度均较大；（３）频度最大的物种为中华桫椤等；（４）相对多度最多者为斑点毛鳞蕨；（５）物种形态各异，大小差别悬殊；（６）分类群比较齐全而且其系统演化的位置多样；（７）地理成分复杂但以北部湾或滇东南山地特有成分最突出；（８）各种生态类型兼备。
This paper deals with the species diversity of pteridophytes from the Laojun MountainNature Reserve based on taxonomic and florstic studies.The results show:(1)Richness in pteridophytes species demonstrated by the following large species diversity indices,Dmg index17.9, Dmn index 2.1, Dri index 41.1 and Dsi index 0.98;(2)High species dcl1sity(0.02 species/m￣2)and high individual density(0.6 individual/m￣2) of pteridophytes;(3) The species occuring mostfrequently are Alsophila costularis(50.0%),Egenolfia appendiculata (50.0%) and Polypodiodesamoena(50.0%);(4) The species with the largest relative abundance is Tricholepidium maculosum(5.2%);(5) Great morphological diversity and variatioi1s in size of pteridophytes;(6) The taxa arerelatively complete and diversified in phylogeny;(7)The geographical elements are complexity andoutstanded by mountainous endemic species of Tonkin Gulf of SE. Yunnan;(8)Ecological diver-sity.
出处
《云南植物研究》
CSCD
1995年第4期415-419,共5页
Acta Botanica Yunnanica
基金
中国科学院昆明植物研究所生物地理与生物多样性开放研究实验室基金
关键词
蕨类植物
物种多样性
自然保护区
老君山
Pteridophytes,species diversity,Nature reserve,The Laojun Mountain, SE Yunnan
